Cotter and the like



Jan. 9, 1923.

W. OLIVER.

COTTER AND THE LIKE.

FILED JULY 29,1922.

al g W iffy-Hey Patented Jan. 9, 1923. 7

issues WILLIAM OLIVER, or MONTREAL, QUEBEC, CANADA.

. corrnn AND THE rams.

Application filed July 29, 1922. Serial No. 578,525.

To all whom it may concern Be it known. that T',WVILLIA3 OLIVER. of the city of .Montreah Province of Quebec. Dominion of Canada a subject of the King of Great Britain, have invented certain new with the ordinary split cotter is eliminated.

and useful Improvements in Cotters and the like; and I do hereby declare that th folloWi ngis a full clear and exact description .ther'eof. f v v p The object of the present invention is to provide a cotter for general use which will take the place of split cotter-s heretofore in common use and with which so much trouble has been experienced.

p In locomotive. construction particularly in the smokeebox when split cotters of the larger sizes are employed it has beenin most instances impossible to remove the cotters unless the split I endwas first sheared cit with a chisel as the split portions when spread become distorted and will not throughthe slot inthe cotter pin or stud. Furthermore the cotters frequently become frozen owing to the intense heat of the smoke box which of course adds to the dif ficulty of removal.

My improved cotteris designed to overcome these difliculties. It can be readily inserted and withdrawn and even if it becomes frozen the leverage provided by its peculiar construction. enables it to be easily set free and withdrawn without injury to it.

The use of this cotter is widespreadas it may be employed with equally advantageous results in all classes of machinery and rolling stock.

Other advantageous features are that it is positively locked against displacement when in use and as it places its cotter pin or stud under tension and bears tightly against the member being held play which might occur For full comprehension however of my invention reference must be had to the ac companying drawings in which similar reference characters indicate the same parts, and wherein;

Figure 1 is a part elevation and part sectional view illustrating my improved cotter in use;

Figure 2 is a plan view thereof;

Figure 3 is an end elevation located at the forked end of the cotter;

Figure .4 is a detail view of an intermediate prong; and

Figure 5 is a similar view of one of the flanking prongs. j

The accompanying drawings illustrate the preferred embodiment of the invention.

This embodiment is of substantially trident form, the three prongs constituting the forked end being indicated at 2, 3 and i. and terminating in a shanl: 5. The vmiddle prong hereinafter referred to as the tongue of cotter is adapted to be inserted through the slot 6 in the cotter pin or stud 7 and the two flanking prongs 2 and 4; which I prefer to term jaws are-adapted to embrace. or straddle the exterior of the latter. The tongue and jaws are constructed separately and their portions which form the shank 5 arewelded or riveted as at 8. The

tongue 3 is straight in plan view and in side elevation is tapered and curved laterally in hooked-form presentlng cam faces 9 and 10 the former being adapted to bear againstv the plate 12 or other object being secured and the latter againstthe side 13 of the slot farthest therefrom. j

The jaws 2 and 4: are bowed outwardly in plan view as at 15 to conform to theexterior of the pin or stud and their free ends which approach the tongue suiiiciently to provide a restricted mouth 16 are turned out sharply as at 1.7 to facilitate the entry of the stud to position between the jaws. The latter are curved laterally as at 18 in a manner s1milar to the tongue and their cam faces 19 coincide with the cam face 9 on the latter so that all three faces bear together upon the plate 12.

The manner in which a cotter thus constructed is inserted and withdrawn is as follows: I v i Assuming the pin or stud is in positlon the tongue of the cotter is inserted through the slot with. the cotter held in the POSIUOII' indicated in dotted lines in Figure 1. The inserting movement 1s continued untll the cam face 10 of the tongue is hearing against and'the hooked ends caused to assume positions substantially parallel to the axis of the stud, the leverage produced enabling the cotter "to be thus positioned with ease and at the same time'placing the cotter pin under tension and preventing play oif the pin or of theplatel I Y V- we ThewithdraWa-l of the cotter is aecon1- plished by reversing the inserting. operation. It may be found desirable to temper the cotters which are employed-in locomotive smoke-boxes owing to theintense heat to whichthey aresubjected. This may be done by heating the forked end ofthe cotter to a blood red approximately 700 and then dipping same in'oil. v i In order to start the cotterwheni'withdrawing-one which is"frozen theend of the shank is sheared ofi as at to enable a chisel to-be inserted beneath it as -indi eated inFignre l in dotted lines.

I .'What Iclaim is asfollowsz, -.1

1. A comparatively inflexible cotterfcOn: structed and arranged to be inserted or withdrawn by movement in an arc" coinci;

' dent With its length.

2. A comparatively inflexible cotter having a forked end and constructed and arhereon' when be ng nv serted or withdrawn. a 3. A comparatively inflexible" cotter having a forked end and the prongsof thexfork being curved laterally inthe earne direction and presenting coincident cam faces.

laterally-w v 5; A comparatively inflexiblecotter for reretaining a pin or the like in place consistlng of i a member of substantially trident form the prongs (may be 1 4. A comparatively inflexible cotter for two witnesses.

of the" fo'rk being curved taining a pin or the like in place consisting of a member of substantially trident form, the middle prong of which is adapted to be inserted through the pin and the flanking prongs adapted to straddle and grip the p the. prongs being curved laterally in the same direction and; presenting coincident cam faces .v v V 6; A comparativelyinflexlble cotter for retaining a pin or the like 111 place consistin of ainember'of trident form the middle prong being tapered and adapted to be inserted through the pin a'nd the'flanking prongs being adapted to straddle-and grip the pin, all ofsaid prongs being; curved laterally in the samedirection inho'oked form.

serted 0r withdrawn, the opposite, end p r eing the cotter.

v '8. A comparatively inflexible cotter of trident form the 'niiddl'e prong Ofthe-"fOrk h A comparatively inflexible cotter havmg a forked end and constructed and arranged to fulcrum thereon when belng insenting an angular face against whichia tool' 4 ositioned for the purpose of startbeing straight in plalrview" and curved latorally in hooked form in sideelevation and the flanking prongslbeing bowed outwardly relatively tothe'middle'prong in plan view- ;and curved laterally in hooked form inside elevation in a curve coincident with-the 

